BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 178s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
    pending: vmstat_shepherd
workqueue events_power_efficient: flags=0x80
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
    pending: gc_worker
workqueue writeback: flags=0x4e
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256
    in-flight: 2880:wb_workfn
workqueue vmstat: flags=0xc
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
    pending: vmstat_update
pool 4: cpus=0-1 flags=0x4 nice=0 hung=167s workers=9 idle: 2289 2403 2293 2281 5540 2260 6 64